Re: GMC Truck Transmission question

Posted by Bubba on February 03, 2005 at 14:05:03 from (69.179.7.84):

In Reply to: GMC Truck Transmission question posted by Jack B. Nimble on February 03, 2005 at 08:20:26:

What happended to you was that the cooler line cracked, spewing ATF; eventually it broke. I'll give the guy credit for not scewing you over the unnecessary $1,800 rebuild. I will say that if it took him 9 days to replace a cooler line he must have done the job blindfolded wearing boxing gloves.

The 4L80E is near bulletproof. Perform the recommended "severe duty" maintenance on it and it will last 200K miles easy. BTW, the overheating problem mentioned by others resulting in ATF puking out the dipstick tube burning several trucks to the ground was caused by people who refused to read their manuals (and visor label warning)... "DO NOT TOW IN OD". There was insufficient oil flow through the cooler in OD to cool the tranny. In '95 or '96 that problem was fixed.

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